Perhaps you should try some spelling variations:
cong vang » cong lang, cong quang, cong ngang
theo chu » theo chieu, cho chu, chao chu
chu xanh » chu manh, chieu xanh, chua xang
trang va » hang va
tran van » luan van
cong van » cong san, song van, cong tan
tuan cau » toan cau, quan cau, tuan cu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo chu xanh - hanh ((trang va) OR (tran van)) nhung ((cong van) or (cong vang)) tuan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu xanh - hanh ((trang va) OR (tran van)) nhung ((cong van) OR (cong vang)) tuan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chu xanh - hanh ((trang va) OR (tran van)) nhung ((cong van) or (cong vang)) tuan cau".
• Adding a wildcard symbol may retrieve word variants: theo chu xanh - hanh ((trang va) OR (tran van)) nhung ((cong van) or (cong vang)) tuan cau*.